Question

1. which properties do atoms of the same element share? select all that apply.

a. atomic number
b. chemical reactivity
c. melting point

Explanation:

Atoms of the same element have the same atomic number (number of protons). Chemical reactivity is mainly determined by the electron configuration, which is related to the atomic number. Melting point can vary for isotopes (same element, different neutron numbers).

Answer:

A. atomic number, B. chemical reactivity